JPS56113161A - Electrophotographic method - Google Patents
Electrophotographic methodInfo
- Publication number
- JPS56113161A JPS56113161A JP1577180A JP1577180A JPS56113161A JP S56113161 A JPS56113161 A JP S56113161A JP 1577180 A JP1577180 A JP 1577180A JP 1577180 A JP1577180 A JP 1577180A JP S56113161 A JPS56113161 A JP S56113161A
- Authority
- JP
- Japan
- Prior art keywords
- originals
- images
- photoreceptor
- white color
- potential
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
- G03G15/0266—Arrangements for controlling the amount of charge
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
- G03G15/0291—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices corona discharge devices, e.g. wires, pointed electrodes, means for cleaning the corona discharge device
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Physics & Mathematics (AREA)
- Control Or Security For Electrophotography (AREA)
Abstract
PURPOSE:To make high-quality copies in a short time irrespective of the kinds of originals by changing the potential curve from a black color original which is a reference on a photoreceptor up to a white color original according to the kinds of originals thereby determining the quantity of the 1st corona application at predetermined quantity. CONSTITUTION:At the time of exposing images to a photoreceptor by the coronas from a DC corona discharger 2 and the coronas from an AC corona discharger 3 then irradiating the entire surface with a lamp 4 thereby forming the latent images on the photoreceptor 1, a potential sensor 10 is disposed on the lower stream of the discharger 3, and the latent image potential in the state that the original lamp is held put out and the latent image potential corresponding to a white color original are measured. These measured values are fed back to a control part 11 which in turn changes the applied currents of the chargers 2, 3, so that the potentials of said black and white color originals conform to the predetermined potential curve. In this way, the influences owing to the varying densities of the images of the originals, the photographic fogs by the colors of the background, etc. are prevented and always sharp copies images are made obtainable from the 1st time.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1577180A JPS56113161A (en) | 1980-02-12 | 1980-02-12 | Electrophotographic method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1577180A JPS56113161A (en) | 1980-02-12 | 1980-02-12 | Electrophotographic method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56113161A true JPS56113161A (en) | 1981-09-05 |
Family
ID=11898060
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1577180A Pending JPS56113161A (en) | 1980-02-12 | 1980-02-12 | Electrophotographic method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56113161A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6291967A (en) * | 1985-10-18 | 1987-04-27 | Fuji Xerox Co Ltd | Controller for copying machine |
JPS6294865A (en) * | 1985-10-21 | 1987-05-01 | Fuji Xerox Co Ltd | Dark potential controller |
-
1980
- 1980-02-12 JP JP1577180A patent/JPS56113161A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6291967A (en) * | 1985-10-18 | 1987-04-27 | Fuji Xerox Co Ltd | Controller for copying machine |
JPS6294865A (en) * | 1985-10-21 | 1987-05-01 | Fuji Xerox Co Ltd | Dark potential controller |
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